Resonant detection of terahertz radiation utilizing plasma waves in high-electron-mobility transistors
Ma Ming-Rui(马明瑞), Chen Yu-Ling(陈钰玲), Wang Li-Min(王立敏), and Wang Chang(王长)†
State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences and Graduate School of Chinese Academy of Sciences, Shanghai 200050, China
Abstract This paper theoretically studies the high-electron-mobility transistor (HEMT) driven by the terahertz radiation. It calculates the gate-to-source/drain admittance and the detection responsivity of the HEMT as a function of the signal frequency. It finds that the peaks of the admittances and the responsivity show redshift, and the heights of the peaks decrease with increasing the lengths of the source-to-gate and gate-to-drain spacing. Such phenomena may be useful in designing different HEMTs by utilizing the effects associated with the plasma oscillations excitation.
Received: 16 May 2007
Revised: 24 August 2007
Accepted manuscript online:
PACS:
52.35.Fp
(Electrostatic waves and oscillations (e.g., ion-acoustic waves))
Fund: Project supported by the National
Fund for Distinguished Young Scholars of China (Grant No 60425415),
the National Science Foundation of China (Grant No 60721004), the
Shanghai Municipal Commission of Science and Technology, China
(Grant Nos 06DJ14008 and
Cite this article:
Ma Ming-Rui(马明瑞), Chen Yu-Ling(陈钰玲), Wang Li-Min(王立敏), and Wang Chang(王长) Resonant detection of terahertz radiation utilizing plasma waves in high-electron-mobility transistors 2008 Chin. Phys. B 17 1854
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